CA2179465A1 - Output Stage of Operational Amplifier Suitable for Mounting on a Substrate and Method of Amplifying Therewith - Google Patents

Output Stage of Operational Amplifier Suitable for Mounting on a Substrate and Method of Amplifying Therewith

Info

Publication number
CA2179465A1
CA2179465A1 CA2179465A CA2179465A CA2179465A1 CA 2179465 A1 CA2179465 A1 CA 2179465A1 CA 2179465 A CA2179465 A CA 2179465A CA 2179465 A CA2179465 A CA 2179465A CA 2179465 A1 CA2179465 A1 CA 2179465A1
Authority
CA
Canada
Prior art keywords
voltage
buffer
amplifying
operational amplifier
output stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2179465A
Other languages
French (fr)
Other versions
CA2179465C (en
Inventor
Daniel Charles Feldt
William David Anderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of CA2179465A1 publication Critical patent/CA2179465A1/en
Application granted granted Critical
Publication of CA2179465C publication Critical patent/CA2179465C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0277—Selecting one or more amplifiers from a plurality of amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

An output stage (418) for an operational amplifier (403) powered by a first supply voltage rail (102) and a second supply voltage rail (104) includes a buffer (100) and a current booster (500) for amplifying an input voltage (105) into a low impedance output signal (117 and 520).
The buffer (100) amplifies the input voltage (105) into the amplified output signal (117 and 520) when the input voltage (105) is within a buffer voltage range (210), the buffer voltage range (210) contained within a maximum voltage range (208) defined by a voltage difference in the first supply voltage rail (102) and the second supply voltage rail (104). The current booster (500) assists the buffer (100) in amplifying the input voltage (105) into the output signal (117 and 520) when the input voltage (105) is outside of the buffer voltage range (210) but within the maximum voltage range (208).
CA002179465A 1995-07-24 1996-06-19 Output stage of operational amplifier suitable for mounting on a substrate and method of amplifying therewith Expired - Fee Related CA2179465C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/506,158 1995-07-24
US08/506,158 US5646576A (en) 1995-07-24 1995-07-24 Output stage of operational amplifier suitable for mounting on a substrate and method of amplifying therewith

Publications (2)

Publication Number Publication Date
CA2179465A1 true CA2179465A1 (en) 1997-01-25
CA2179465C CA2179465C (en) 1999-03-16

Family

ID=24013444

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002179465A Expired - Fee Related CA2179465C (en) 1995-07-24 1996-06-19 Output stage of operational amplifier suitable for mounting on a substrate and method of amplifying therewith

Country Status (12)

Country Link
US (1) US5646576A (en)
JP (1) JPH09199951A (en)
CN (1) CN1067194C (en)
BR (1) BR9603121A (en)
CA (1) CA2179465C (en)
DE (1) DE19629078C2 (en)
FR (1) FR2737358B1 (en)
GB (1) GB2303751B (en)
IL (1) IL118632A (en)
IT (1) IT1284223B1 (en)
MX (1) MX9602957A (en)
SG (1) SG70994A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6292057B1 (en) 1998-12-18 2001-09-18 Texas Instruments Incorporated Output stage of an operational amplifier and method having a latchup-free sourcing current booster for driving low impedance loads
JP3573055B2 (en) * 1999-03-26 2004-10-06 セイコーエプソン株式会社 Display drive device, display device, and portable electronic device
KR100988487B1 (en) 2002-03-08 2010-10-20 주식회사 아도반테스토 Semiconductor test device
US7288993B2 (en) * 2005-01-25 2007-10-30 Analog Devices, Inc. Small signal amplifier with large signal output boost stage
KR20070095674A (en) * 2006-03-22 2007-10-01 엘지전자 주식회사 Amplifier
US20080007361A1 (en) * 2006-07-04 2008-01-10 Mediatek Inc. Oscillator with Voltage Drop Generator
JP5522818B2 (en) * 2007-12-18 2014-06-18 フリースケール セミコンダクター インコーポレイテッド Amplifier circuit
US9467107B2 (en) * 2014-03-10 2016-10-11 Freescale Semiconductor, Inc. Rail-to-rail follower circuits
US10170270B1 (en) 2017-08-04 2019-01-01 Wisconsin Alumni Research Foundation Ion source
US10205423B1 (en) 2017-08-11 2019-02-12 Nxp Usa, Inc. Rail-to-rail source follower

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579136A (en) * 1965-12-13 1971-05-18 George A Machamer Multi-stage power amplifier in which each stage conducts for only a predetermined portion of the input
DE1274660B (en) * 1966-05-05 1968-08-08 Itt Ind Ges Mit Beschraenkter Method for achieving a constant current gain factor for a transistor amplifier with a wide current gain factor range and circuit arrangement for carrying out the method
US4240040A (en) * 1974-02-11 1980-12-16 Bell Telephone Laboratories, Incorporated Operational amplifier
JPS58111507A (en) * 1981-12-25 1983-07-02 Nippon Gakki Seizo Kk Power amplifier
JPS5934706A (en) * 1982-08-20 1984-02-25 Toshiba Corp Power amplifying circuit
JPS5945706A (en) * 1982-09-09 1984-03-14 Nippon Shiguneteitsukusu Kk Differential amplifier circuit
JPS6085615A (en) * 1983-10-17 1985-05-15 Sony Corp Buffer amplifier
US4588961A (en) * 1984-08-24 1986-05-13 At&T Bell Laboratories Amplifier with extended output drive capability
US4636744A (en) * 1985-10-01 1987-01-13 Harris Corporation Front end of an operational amplifier
US4755767A (en) * 1987-07-30 1988-07-05 National Semiconductor Corporation High gain amplifier using two current mirrors
IT1233417B (en) * 1987-12-03 1992-03-30 Sgs Microelettronica Spa PERFECTED POWER STAGE, WITH INCREASED OUTPUT DYNAMICS.
EP0509113B1 (en) * 1991-04-16 1998-10-07 Siemens Aktiengesellschaft Output buffer amplifier with high signal amplitude
US5140280A (en) * 1991-08-30 1992-08-18 Motorola, Inc. Rail-to-rail output stage of an operational amplifier
JP3320434B2 (en) * 1991-11-28 2002-09-03 沖電気工業株式会社 Operational amplifier circuit
US5194824A (en) * 1992-01-23 1993-03-16 Intel Corporation 5V Rail-rail unity gain amplifier driving high capacitive load
JP3036221B2 (en) * 1992-04-24 2000-04-24 トヨタ自動車株式会社 Semiconductor integrated circuit
US5399991A (en) * 1993-01-28 1995-03-21 National Semiconductor Corporation High speed low power op-amp circuit
US5351012A (en) * 1993-04-02 1994-09-27 Elantec, Inc. Low input resistance current-mode feedback operational amplifier input stage

Also Published As

Publication number Publication date
GB2303751A (en) 1997-02-26
IT1284223B1 (en) 1998-05-14
IL118632A0 (en) 1996-10-16
JPH09199951A (en) 1997-07-31
FR2737358B1 (en) 1999-07-16
SG70994A1 (en) 2000-03-21
US5646576A (en) 1997-07-08
DE19629078C2 (en) 1999-04-29
DE19629078A1 (en) 1997-01-30
GB9615220D0 (en) 1996-09-04
GB2303751B (en) 2000-05-31
CN1067194C (en) 2001-06-13
ITRM960515A1 (en) 1998-01-19
IL118632A (en) 2002-02-10
FR2737358A1 (en) 1997-01-31
MX9602957A (en) 1998-04-30
CA2179465C (en) 1999-03-16
CN1150720A (en) 1997-05-28
BR9603121A (en) 1998-05-05
ITRM960515A0 (en) 1996-07-19

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Legal Events

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EEER Examination request
MKLA Lapsed